Answer:
35000
Step-by-step explanation:
3. What is the Kinetic Energy of a 100 kg object that is moving with a speed of 12.5 m/s?
Answer:
7812.5 J
Step-by-step explanation:
Kinetic energy is equal to 1/2 m v^2.
The mass of the object is 100 and the velocity is 12.5 m/s.
Therefore, the kinetic energy is 1/2 (100) (12.5)^2 = 7812.5 J.
Answer:
KE = ½ (100kg) (12.5 m/s)2
KE = ½ (100kg)(156.25)
KE = 7,812.5J
answer ^
Step-by-step explanation:
KE = ½ mv2
KE = ?
m = 100kg
v = 12.5m/s
State how many imaginary and real zeros the function has.
f(x) = x4 - 15x2 - 16
Answer:
2 real roots
2 imaginary roots
Step-by-step explanation:
So we have the function:
[tex]f(x)=x^4-15x^2-16[/tex]
And we want to find its zeros.
First, let u equal x². So:
[tex]0=u^2-15u-16[/tex]
Factor:
[tex]0=(u-16)(u+1)[/tex]
Zero Product Property:
[tex]u-16=0\text{ or }u+1=0[/tex]
Add 16; Subtract 1. Replace u:
[tex]x^2=16\text{ or }x^2=-1[/tex]
Take the square root:
[tex]x=\pm 4\text{ or }x=\pm i[/tex]
So, our solutions are 2 real roots and 2 imaginary roots.
a dvd player that costs a store $28 is marked up by 80% what is the sale price
Answer:
$50.4
Step-by-step explanation:
Cost = $28
Mark up = 80%
Sale price is:
$28 + 80% = $28*1.8 =$50.4Solve the equation x+2/3=18
Answer: x=52/3
Step-by-step explanation:
x+2/3=18
x=18-2/3 ⇔ subtraction property of equality
x=54/3-2/3 ⇔ convert integer into fraction
x=52/3
Hope this helps!! :)
Answer:
see below
Step-by-step explanation:
( x+2)/3=18
Multiply each side by 3
(x+2)/3 *3 = 18*3
x+2 = 54
Subtract 2
x+2-2 =54-2
x = 52
or if
x+2/3=18
Subtract 2/3
x+2/3 -2/3 = 18-2/3
x = 17 +1 -2/3
x = 17 1/3
Round 8,503 to nearest thousand
Answer:
9,000
Step-by-step explanation:
If x < 5, we round down.
If x ≥ 5, we round up.
Since 8,503, 500 is ≥ 5, we round up to 9. So,
8,503 ≈ 9,000
Answer:
9,000
Step-by-step explanation:
Look to the hundreds place. If the number is 4 or below we round down. If the number is 5 or above we round up.The number is 5, so we round up. The 8 in the thousands place becomes a 9, and the other places become 0s. Write out the newly rounded number: 9,000You're done! I hope this helps!
Evaluate the expression. If necessary, round to the nearest hundredth. log3 1
Answer:
0
Step-by-step explanation:
The base is 3. You are taking the log base 3 of 1.
Since 3^0 = 1,
log_3 1 = 0
ILL GIVE YOU BRAINLIST !
North Carolina entered the Union x years after Pennsylvania. Which expression shows the year North Carolina entered the Union?
A. 1845 + x
C. 1787 + x
B. 1845 - X
D. 1787 - X
Answer:
Option (C)
Step-by-step explanation:
State Year entered into Union
Pennsylvania 1787
Indiana 1816
Florida 1845
Texas 1845
West Virginia 1863
Since North Carolina entered the Union 'x' years after Pennsylvania, expression that represents the the year North Carolina entered the Union will be = (1787 + x)
Therefore, Option (C) will be the answer.
Answer:
The answer is C
Solve the equation, and check the solution. If applicable, tell whether the equation is an identity or a contradiction.
2x + 16 = 2
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A. The solution set is ]
(Type an integer or a simplified fraction.)
OB. The solution set is all real numbers), so the equation is an identity
Oc. The solution set is o so the equation is a contradiction.
Answer:
please this search in Google
Answer:
B
Step-by-step explanation:
Solve equation 9(3x+7)-3.5 = -8
Answer: " x = - 2.5 " .
___________________________________________
Step-by-step explanation:
Given:
9(3x + 7) - 3.5 = - 8 ; Solve for "x" ;
First: Let us add "3.5" ; to both sides of the equation:
9(3x + 7) - 3.5 = - 8 ;
+ 3.5 = + 3.5 ;
___________________________________________
to get:
9(3x + 7) = - 4.5 ; [Note that " -3.5 + 3.5 = 0" ; [Cancels out to "0".].
Second: Let us expand the expression on the "left-hand side" of the equation.
" 9(3x + 7) " ;
Note the "distributive property" of multiplication:
" a(b + c) = ab + ac " ;
As such:
9(3x + 7) = 9(3x) + 9(7) = 27x + 63 ;
Third:
Now, replace this term for the original expression, on the "left-hand side" of the equation; & Rewrite the equation:
27x + 63 = - 4.5 ;
Fourth: Now, we can divide each side of the equation by "9" ;
(27x + 63) / 9 = (-4.5)/9 ;
to get:
(27x/9) + (63/9) = (-4.5/9) ;
to get:
3x + 7 = -0.5 ;
Fifth:
Subtract "7" ; from Each side of the equation:
3x + 7 = -0.5 ;
- 7 = - 7 ;
___________________________________________
to get:
3x = -7.5 ; [Note that " +7 - 7 = 0" ; [Cancels out to "0".] ;
___________________________________________
Sixth: Divide each side of the equation by "3";
to isolate "x" on one side of the equation; & to solve for "x" ;
___________________________________________
3x / 3 = -7.5 / 3 ;
to get:
x = - 2.5 .
___________________________________________
Hope this helps!
Best wishes!
___________________________________________
Step-by-step explanation:
Hey there!
Given;
[tex]9(3x + 7) - 3.5 = - 8[/tex]
Perform the operations in left side.
[tex]27x + 63 - 3.5 = - 8[/tex]
Simplify the like terms and find value of x.
[tex]27x + 59.5 = - 8[/tex]
[tex]27x = - 8 - 59.5[/tex]
[tex]27x = - 67.5[/tex]
[tex]x = \frac{ - 67.5}{27} [/tex]
Therefore the value of x is "-2.5".
Check;
9(3×-2.5+7) - 3.5 = -8
-4.5 - 3.5 = -8
-8 = -8 (True).
Hope it helps...
if point C is between points A and B, then AC+CB=______?
Answer:
AB
Step-by-step explanation:
On a number line, suppose point E has a coordinate of -2, and EG = 13. What are the possible coordinates of point G?
Which expressions are equal to 0 when x = -1? Check all that apply.
4(x + 1) divided by
(4x + 5)
4(x - 1) divided by
(5 - 4x)
4(x - (-1) divided by
(4x + 5)
04.(X + (-1) divided by
(4x + 5)
0 4(x + 1) divided by
(5 - 4x)
Answer:
A C and E
Step-by-step explanation:
Use the given conditions to write an equation in point-slope form. Keep parenthesis in point-slope form. slope = -5, passing through (4,-2)
Answer:
Step-by-step explanation:
y + 2 = -5(x - 4)
y + 2 = -5x + 20
y = -5x + 18
( 2r 2 - 16r + 29 ) ¸ ( r - 5 )
Answer:
-12r^2 + 89r - 145
Step-by-step explanation:
(2r(2)−16r+29)(r−5)
=(2r(2)+−16r+29)(r+−5)
=(2r(2))(r)+(2r(2))(−5)+(−16r)(r)+(−16r)(−5)+(29)(r)+(29)(−5)
=4r2−20r−16r2+80r+29r−145
=−12r2+89r−145
Clara is completing a math project.she has two ropes with length 126cm and 291cm.she wants to cut them into pieces of equal length without remainder.what is the greatest possible length of each smaller pieces of rope??this is my homework so pls kindly help me for the answer i would really appreciate it!✨
Answer:aw45
Step-by-step explanation:
w
Audrey Lorenz assembles gift baskets for a florist. The owner pays her $0.45 per small basket and $0.75 per large basket on Tuesday, she assembled 288 small baskets and 72 large ones what is her total pay?
Answer:
Step-by-step explanation:
(.45)(288)= $129.60
(.75)(72)= $54
$129.60 + 54 = $184.60 is Audrey's pay
By assembling 288 small baskets and 72 large ones she earned $183.6.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, The owner pays her $0.45 per small basket and $0.75 per large basket and she assembled 288 small baskets and 72 large ones.
So, Her total pay can be obtained if we multiply pay per box by the no. of boxes and add them it will be her total pay which is,
= (0.45)(288) + (0.75)(72).
= $(129.6 + 54)
= $183.6
learn more about numerical expressions here :
https://brainly.com/question/29199574
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What is the product of the polynomials below?
(7x2+2x+4)(2x+5)
Answer:
This is a simple multiplication problem.
Here is my steps:
(14x^3 + 35x^2 + 4x + 10x + 8x + 20)
Combine like terms:
(14x^3 + 35x^2 + 22x + 20)
And that is your answer^^
Answer:
14x3+ 39x2 +8x +20
Step-by-step explanation:
Use the distributive property and/or the FOIL (front, outer, inner, last) method.
First:
Multiply (7x2)(2x)
=14x3
Then (7x) (5)
=35x2
Second:
Multiply (2x)(2x)
=4x2
Then (2x)(5)
=10
Third:
Multiply 4(2x)
=8x
Then (4)(5)
=20
You should get:
14x3 +35x2 +4x2 +10 +8x +10
Add all common numbers.
You should get:
14x3+ 39x2 +8x +20
"-8 is 12 less than a number."
Answer:
The answer would be x<4
It’s going in a pattern I’m not doing it
Answer:
They keep adding 3x as much
Simplify the expression with the given variable’s ?! 3r-4s, when r= 5 and s= 2/3
Answer:
12.33
Step-by-step explanation:
3r-4s
3×5-4×2/3
15-8/3
12.333
the midpoint of a horizontal line segment is at x=1 if the length of the line segment is 10.5. what absolute value equation could be used to find the x value of the endpoints
Answer: -4.25 ≤ x ≤ 6.25
Step-by-step explanation:
The midpoint of a segment is located at the same distance of each of the endpoints of the segment.
The midpoint is at x = 1.
The length of the segment is 10.5, if we divide it by two we have:
10.5/2 = 5.25
Now, if we want the endpoints to be at the same distance of the midpoint, then the endpoints will be:
Xmax = midpoint + 5.25
Xmin = midpoint - 5.25
Then the extremes are:
Xmax = 1 + 5.25 = 6.25
Xmin = 1 - 5.25 = -4.25
Then this segment can be written as:
Xmin ≤ x ≤ Xmax
-4.25 ≤ x ≤ 6.25
1.) 3.4 + .95 +89
2.) 5.9 +.85 +.832
Answer:
1.) 93.35
2.) 7.582
Step-by-step explanation:
Answer:
1. 3.4 + .95 +89 = 93.35
2. 5.9 +.85 +.832 = 7.582
The average natural gas bill for a random sample of 26 homes in the 19808 zip code during the month of March was $305.30 with a sample standard deviation of $46.50. The critical value for a 95% confidence interval around this sample mean is ________.
Answer:
2.06
Step-by-step explanation:
The formula for critical value = Margin of Error / Standard Error
Margin of Error = z × Standard deviation/√n
Mean for the month of March = $305.30
Standard deviation = $46.50
n = number of samples = 26 homes
z score for 95% confidence interval = 1.96
= 1.96 × $46.50/√26
= 17.874024556
Standard error = standard deviation/√n
= $46.50/√26
= 9.1194002839
Critical value = Margin of Error/Standard Error
= 17.874024556/9.1194002839
= 2.06
200+45655 iiiiii néed help plsssss¡
Answer:
45855
Step-by-step explanation:
45655
+200
=45855
Answer:
45855
Step-by-step explanation:
Determine if the function is a polynomial function. If the function is a polynomial function, state the degree and the leading coefficient. If the function is not a polynomial, state why. f(x)=1050
Answer:
D
Step-by-step explanation:
The function f(x) = 1050 is a polynomial with degree zero option (A) this is a polynomial function of degree zero with a leading coefficient of 1,050 is correct.
What is polynomial?Polynomial is the combination of variables and constants systematically with "n" number of power in ascending or descending order.
[tex]\rm a_1x+a_2x^2+a_3x^3+a_4x^4..........a_nx^n[/tex]
The question is incomplete.
The complete question is:
Determine if the function is a polynomial function. If the function is a polynomial function, state the degree and the leading coefficient. If the function is not a
polynomial, state why.
F(x) = 1,050
A. This is a polynomial function of degree zero with a leading coefficient of 1,050.B. This is not a polynomial. Horizontal lines can not be polynomials as there are no turning points.C. This is not a polynomial. Only vertical lines of the form x = b can be classified as a polynomial.D. This is not a polynomial because there are no variables.We have a function:
f(x) = 1050
We can write it as:
f(x) = 1050x⁰
x⁰ = 1
As we know from the definition of the polynomial:
The polynomial is a combination of the variable and constant with powers of x that are non-negative.
f(x) = 1050 is a polynomial function of degree zero with a leading coefficient of 1,050.
Thus, the function f(x) = 1050 is a polynomial with degree zero option (A) this is a polynomial function of degree zero with a leading coefficient of 1,050 is correct.
Learn more about Polynomial here:
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is square root of 140 a rational or irrational number ?
Answer: The square root of 140 is irrational.
Step-by-step explanation:
Take the square root of 140:
11.8321595662
This is an imperfect square root, and all imperfect square roots are irrational.
Choose all sets that contain the number –2.22.
Answer:
it is only the RATIONAL numbers who can contain that number
Answer:
rational and real numbers!!
Step-by-step explanation:
The volume, in cubic feet, of a right cylindrical silo of height and radius is [tex]V = \pi r^2h[/tex] The height of the silo is h(r) = 3.5r. Which statements are true regarding the functions described?
A. To get a volume of 100 cubic feet, the radius must be 2 feet.
B. The domain of [tex]V(h(r))[/tex] is restricted to values of r greater than 0.
C. The output of V is the input of h
D. [tex]V(h(r)) = 3.5\pi r^3[/tex]
E. The volume depends on the radius of the cylinder
1. The domain of [tex]V (h(r))[/tex] is restricted to values of r greater than 0.
2. [tex]V(h(r)) = 3.5\pi r^3[/tex]
3. The volume depends on the radius of the cylinder
Question Number 3 A high school student earns $65 for mowing one customer's lawn. If he mows 13 lawns in one week, how much money will he earn for that week?
Answer:
$845
Step-by-step explanation:
13 lawns x $65 each = $845
Find the area of a circle with diameter 15cm
Answer:
177 cm²
Step-by-step explanation:
Area of circle = [tex]\pi[/tex]r²
Radius = diameter/2 = 15/2 = 7.5
Therefore,
Area = 22/7 × 7.5 × 7.5
= 176.7 = 177 cm²
Answer:
The answer is
176.71 cm²Step-by-step explanation:
Area of a circle is given by πr²
where
r is the radius
From the question we were given the diameter
To find the radius using the diameter we use the relation
[tex]radius = \frac{diameter}{2} [/tex]
diameter = 15 cm
[tex]radius = \frac{15}{2} [/tex]
radius = 7.5 cm
Substitute the value into the above formula and solve for the area
Area = (7.5)²π
= 56.25π
= 176.714586
We have the final answer as
176.71 cm² to 2 decimal places
Hope this helps you